Aion-2.0 vs Claude Opus 5.5

Price, context window & benchmark comparison

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Aion-2.0

AionLabs
$0.80 / $1.60
Input / Output · per 1M tokens
VS
A

Claude Opus 5.5

Anthropic
$4.00 / $20.00
Input / Output · per 1M tokens
Compare different models
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Verdict: Aion-2.0 is 8.0× cheaper than Claude Opus 5.5 on a typical 3:1 input/output mix. Claude Opus 5.5 has the larger context window (1M vs 131K).
Aion-2.0Claude Opus 5.5
Input price / 1M$0.80$4.00
Output price / 1M$1.60$20.00
Blended price (3:1)$1.00$8.00
Cached input / 1M$0.20$0.20
Context window131K1M
Max output33K128K
Intelligence index57.6
Coding index
Providers11
Best provider uptime (30m)100.0%
Vision inputNoYes
ReasoningYesYes
Tool callingYesYes
Released2026-02-232026-09-22
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FAQ

Which is cheaper, Aion-2.0 or Claude Opus 5.5?

Aion-2.0 is 8.0× cheaper than Claude Opus 5.5 on a typical 3:1 input/output mix.

Aion-2.0 vs Claude Opus 5.5: which has a bigger context window?

Aion-2.0: 131,072 tokens. Claude Opus 5.5: 1,000,000 tokens.

How much would 1 million requests cost?

At 2,000 input + 500 output tokens per request: Aion-2.0 ≈ $2,400, Claude Opus 5.5 ≈ $18,000.

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